Same thing on my new 2014 Palomino Columbus 5er we have had it 3 months. I caulked it using Geocel Advanced RV EPDM roof sealant. I didn't want to take it back to the stealers for repairs they aren't good at to start with.
2014 Palomino Columbus 3650TH
435AH 12V VMax Charge Tanks, 520 watt Monocrystilline Solar Array, Morningstar MPPT TS-60 CC,Morningstar Remote,Cotek True Sine Wave Inverter,Cotek Remote Controller,50amp Progressive Hardwire Surge Protector
2015 Dodge 3500 6.7L 4X4
2011 CanAm Commander XT 1000